7)
Open Sachesi
You do not have to connect your device yet
Just open Sachesi and click the tab Extract

Click the Extract Signed button and select the big Debrick file from your 10.3.2.2639 Debrick folder

You' ll see a progress bar running, wait till the process is finished.

In your 10.3.2.2639 Debrick folder is now a second even bigger file which looks like:
qcfm.image.com.qnx.qcfm.qc8960.factory_sfi.desktop .BB10_3_2.2639.834561.signed

In Sachesi click on the Extract Apps button and selct this new big .signed file from your 10.3.2.2639 Debrick folder

You' ll see again a progress bar running, wait till the process is finished.

In your 10.3.2.2639 Debrick folder is now a subfolder which looks like:
qcfm.image.com.qnx.qcfm.qc8960.factory_sfi.desktop .BB10_3_2.2639.834561

Open this folder and copy all files in your formely created 10.3.2.2639 folder (where you put the Core OS and the Radio before)

8)
Now put your device in airplane mode and connect it via USB
If you have set a password on your device enter it.
Click the Install tab
Leave the checkmark "Only install newer apps" checked
Click the Install Folder button and select your 10.3.2.2639 folder
You will see a progress circle, be patient this will take some time

9)
Your device restarts, first boot may take some time. Be patient, this ist not like a normal boot, it takes much longer than usual.

10)
Congratulations, you are now running 10.3.2.2639

11)
Donate to xsacha for providing the excellent Sachesi software:
Qtness Development Working on Qt apps

I am currently on Z30STA100-2/10.3.2.798 and I just want to upgrade to the current one. Do I also have to download the whole folder which is a gig point something or I just have to download certain folders?

I am currently on Z30STA100-2/10.3.2.798 and I just want to upgrade to the current one. Do I also have to download the whole folder which is a gig point something or I just have to download certain folders?

Posted via CB10

You can do just Core+Radio then a couple of hard resets, that should do. That's the advice given by the more experienced developers here.